Double-walled vessel



Sept` l, l 925. y l ,551,778

A. E ALTENBERG DOUBLE WALLED VESSEL Fu@ nec. 31 1521 Patented Sept. 1, 1925. .Y

UNITED STATES PATENT OFFICE.

ALMA E. ALTENBERG, F CINCINNATI, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 THE ICY-HOT BOTTLE COMPANY, A CORPORATION 0F OHIO (1923).

Y DOUBLE-WALLED i vEssEL.

Applicationimed December s1, 1921. serial No. 526,269.

To all 'whom t may cof/wem:Y

Be it known that I, ALMA E. AIJrENBERG',v

It isv the object of my invention to pro- Lvide a novel heat-`insulated vessel comprising metallic walls surrounding a heat-'insulating space which is located about the containing portion of the vessel.A

rvIt is the object of lmy invention further to supply the heat-insulating space in a double walled heat-insulated vessel, VYwith a purilied insulating. material vof cellular structure, containing. a preponderance of Y minute cells or recesses'to form a filling materlal which is light 1n weight in comparison j with its bulk vand 1 having minute cells or recesses which intercommunicate, ,and the air in which has been rarelied tov increase the heat-insulating `properties Vof the vessel; and, y furrther, to4 provide a double metal walled heat-insulating space kand to provide the metal walls with radiant opaque surfaces for reflecting actinic rays or the rays of radiant heat, in order to arrest the transmission of heat to and from the contents of the vessel.

It is'the yobject of my invention, further, to provide a heat-insulating metal-walled bottle so constructed that a short neck containing heat-insulatingmaterial is provided, the opening in the neck being suiiiciently short and wide so that ready access may be had through it to the interior of the vessel, especially to the upper inner wall of the breast thereof, by means of a cleaning cloth held about the finger of the person cleaning the bottle, the neck being of such rbrevity and width that the person cleaning the same may insert the finger with the cleaning cloth thereover and thereby with it reach the upper inner wall of the-breast of the bottle;

further, tofprovide a bottle vof the character mentioned with a Areinforcing Abreast and neck portion received about thev outer wall of the double-walled metal bottle toA enclose a dead air space about saidneck andbreast; further, to provide the insulating space bei tween the main wallsof the .vesselv with novel closing means; and, furthen'to'pro- ...vde novel means wherebythe vessel. 'may havea vacuum in its insulating space readily recreated.

Y rlhe vinvention will be further readily understood from the following description and claims, and `from the drawing, in which latter: f

Fig. 1 represents a lon itudinal axial sec- Jion ofa metal bottle em odying my invenion.

Fig. 2 is asimilar but enlarged view of the neck portion of the same. c Fig. 3 is a horizontal cross-section taken rin the planer of the line 3-3 'of Fig. 1.

Fig. 4 is a horizontal crosssection taken in the plane of the line 4 -4 of Fig. 1.

- The vessel to which my present invention .is adapted is exemplified `as a bottle.

Itcomprises aninner wall 11, and an outer wall 12, between which there is va heat-insulating space 13 about the containing portion 14 of the vessel. Its walls are. exempliiied as of metal, for instance, sheet steel, the joints in which are hermetically sealed, throughout their lengths, as by welding or brazing.- f Y The inner wall is exempliiiedas comprising arbody v15, a bottom 16, abreast 17 and a neck 18. The body of the inner vessel may be formed up ofa flat blank, which is curled into cylindrical form so that its longitudinal edges lap outwardly to form a joint 19 which is hermetically sealed as by electrical welding, as `indicated at 20. This joint forms an even surface with the inner surface of the inner vessel.

The bottom is shown downwardly dished at its-middle as shown at 25, and is provided with an annular edge flange 26 extending downwardly from the outery edge of the bottom, and substantially concentric with the body, to form a joint 27 between the iange and the lower edge ofthe body, which is hermetically sealed,as by means of electric welding, as indicated at 28.

`The lower edge of the breast is provided with an inner annular rabbet 31, in which theuppervedge of the .body is received for forming a joint 32,'between the outer annular wall of said rabbet and said upper edge of the body, this joint being hermetically sealed, asy by means of electrically welding said wall and said upper edge together, as indicated at 3.3, throughout the length 'ofthe joint, 1 The rabbet forms' a space vforreceiving said upper edge s0' that loA the inner face of said inner'vmember is con'-l tinuous and smooth at said joint.

The upper end ot the breast is provided with an annular ange 36,` extending sub,- stantially parallel with the, axis of the bott-le. The lower end of the inner portion of a neck member 37 is provided with an annular rabbet 38,V in which said annular liange is received for forminga joint therebetween, hermetically sealed as by electrical'ly welding the same together, as indicated at 39, throughout the joint.

The outer wall of' said heat-insulating space comprises a body lll, a bottom 42, ay

' breast 43, and a neck ll. `rlhe inner neck I8 and the outer neck 44 are at their upper margins provided with an annular bead 46 which forms the pouring lip of the bottle, the inner heat insulating space extending preferably upwardly to the inner face of said pouringl-ip. A neck-member`- is thus formed which comprises the neck portions of the inner and outer walls and the mouth and pouring l'ip of the bottle.

The bottoml is preferably outwardly dished towards its middle, as shown at 4&8, and is provided with a peripheral flange 4:9 extending outwardly and substantially parallel with; the lower end' of' the outer body..

This lower end oi' the outer body and the annular peripheral Han-ge form a joint which is hermetically sealed, as by being electrically7 welded, as indicated at 5l, throughout the length of the joint. The

" body is preferably provided with reinforcing annular beads 52, 53'.

The outer bod-y may be formed up of a. 'llat blank rolled in the form of a cylinder with its longitudinal edges lapping inwardly toform a joint 55,11ermetical'ly sealed, as by electric welding, as indicatedl at 56, throughout its length. This joint Ylorms an even surface with the outer surtace Oat the bottle. Y`

rlhe lower edge of the outer breastis provided with a cylindrical tlange 58 received over the upper edge ot'theouter body, with the lower edgeo the cylindrical flange proximate tothe upper bead 52, for 'forming a joint which' is hermetieal-'ly sealed, as by electric welding, as indicated at 59, throughout`- the length of' the joint.

The upper edge ot the outer breast is provided with an annular flange 6l, which tapers upwardly toward the axis of the breast.V The outer neck i'ares outwardly towards its lower end. The lower end of the outer neck is provided with a flange 62 complemental to the flange 6l. The flanges 6l' and 62 form ajoint which is hermetically sealed, throughout its length, as by electric welding, as indicated at/SS. i

The-bott in ot the outer member is, at its middle aifl: PTOD PlOvid'ed with out'.- wardly bulged-depression, at the inner 'ace of the rim of which a ring 7S is secured, this ring forming a flange or lip, extending toward the axis of the bottle to form an annular recess 79' surrounding the depression 77 to. form a. recess provided with an overhanging wall. A body 8l oit arresting material, for instance, asbestos liber, is placed in said recess and held in said depression by means of said overhanging lip.

A nipple projects from the wall ot said depression, preferably at the axis ol the bottle. lt has areduced end 86 tor torming a shoulder 87. The bottom of the depression is provided with a hole, the wall of which is received over said reduced end on said shoulder, said reduced end being upset or hanged over the upper or inner tace ot' said wall, as shown at- 88, for rigidly securing said? nipple to said bottomA and forming a joint therebetween which is hermetically sealed', as by electrically welding the two partstogether.

The nipple 85 is formed with a bore 89, which preferably contracts taperingly inward. M

A plug 91', shown as a-ta-pering plug, is received in said' bore and is forced into the samefor compressing the plug within the wall otIV the bore. The taper of the plug is complemental to the taper oj the bore. rlhe wall ci' the socket isfpreiierably ot hard metal, for instance, steel, while the plug is prel'erabl7 of softmetal, lorl instance, lead, which may be compressed into the. bore and thereby form an hermetic seal. This is preferably accomplishedV by forceful insertion of said plug by outer axial pressure, as by the blow ot a plunger. The coacting tapered portion-s` of the plugy and bore are comparatively long, bei-ng of substantially greater lengths than diameters, for forming acontactsurface between the plug and the wall or the bore, throughout which the plug is compressed by lateral pressure against said wall by axialv movement ot the plug to form a hermetically sea-led joint. l iurther prefer toseal' the joint between the plug and the wall of the socket by means ot a binder, such as shella. rlhe outer end ot the plug preferably projects outwardly beyond said bore, so as to be gripped by means ot a suitable tool, as a pair ot' pliers, for pulling out the plug it this should be desired for the purpose ot recreating a vacuum or ra-refied air in the insulating space between the walls of the vessel.

A. vbase 96 is received about the bottom ot the outer member. It is shown provided with reinforcing beads 9T, 98. The wall ot he base is received about the lower end oi the wall of thecouter member, the bead 97 being received about the bead the upper edge of the bead 97 being turned or spun about the bead 53 .tor forming a. joint 99 betweenV them,v which is preferably an airtight joint, which may be soldered, brazed or welded throughout its length, to form the space between the bottom of the outer wall of the double walledvessel and the base a deadgair space. f

The base is atfits an enlarged bead 100 on which the bottle rests.` The bead is continued as an inner flange 101, at the upper endof which there is an inwai'dly extending annular flange 102, to form an opening 103 at the bottom of the base. A closing `plate 104 is received against this flange to close said opening, and is fixed to said flange to form a joint 105, as by soldering, Vblrazing or weldingV throughout the joint, to close the lower space between the bottom of the outer wall of the doublewalled bottle and the base, whereby a dead air space 106 is formed between the base and the bottom 0f the outer wall of the bottle.

I prefer to provide rthe breast `and neck portions of the outer wall with a surroundingand protective auxiliaryv breast and neck portion 111, comprising a breast 112 and a neck 113.. The breast is provided withan annular bead`114 and an annular bead 115, the latter received over the annular bead 52 of the outer body, and is crimped thereover, and `jnefe'rably soldered, brazed or welded thereto, to form an air-tight oint 116 therebetween. f

The neck portion is provided with outwardly extending 'threads 121, formed into the metal of the auxiliary neck, as by pressing the same tliereinto. The upper end of the neck lias'an inwardly projecting annular Y iiange 122, the inner edge of Vwhich contacts -tlie neck of the outer wall adjacent to the pouring lip 46, and forms a joint 128 therewith, Vas by soldering, brazing or welding, to form an air-tightjoint. A dead air space 124 is located betweeni the breast and neck portionof the outerv wall of the doublewalled bottle and said auxiliary breast and neck member,r` which extends close .to the Y pouring lip of the vessel, and encompasses the upper portion ofthe insulatingspace between the double walls for aiding inresisting heat transference between the inside and outside of the bottle.

The inner surface of the inner vessel is provided with a suitable coating 125, preferably a vitreous coating, for instance, of vitreous enamel, this inner coating covering the entire inner surface of the inner vessel, and preferably extending outwardly to an annular line, exemplified at 126, adjacent to but within the outeredge of the mouth, to prevent danger of contact of thezenamel with objectsinto which the contents of the bottle may be poured, by which loosening, cracking or breaking of the enamel might be caused.A The enamel employed preferably has Aa coefficient of expansion similar to the `@etflcifmt of expansie-nef the inet-a1.V

bottom pfoviaeawah A suitable stopper 128,y as of cork, is received through the mouth into the neck. A cap 129, shown as a cup, provided with threads 130, complemental to the threads 121, is screwed about the ythreads 121, for closing the bottle and holding the stopper in place. TheA threads may assume the form of other desirable connecting means between the cap andthe body. ,e

The inner neck 18 of the bottle is short and wide, and the inner upper surface 127 of the inner breast 17 is substantially close to the pouring lip' of the bottle, whereby a person may, with a cloth about the finger, readily insert the cloth covered Ifinger through the mouth of the bottleI and cleanly wipe the breast of the bottle, enhancing the sanitary' properties of the bottle.

The outer surface of the bottle including Vpreferably the upper edge of the pouring lip to the line 126, is suitably finished, preferably by polishing the same to producey a bright reiiecting opaque finislnand nickelplating the same, to form acoating 120, whereby to arrest the passage of actinic rays or radiant heat rays, although the outside of the bottle may also be provided with other kinds or character of finish.'v i

The space 13 between the inner member and the outer member forms a heat-insulating space. The inner vsurface of this space is preferably provided with a coating 131 to form opaque outwardly reflecting surfaces to arrest actinie rays or radiant heat rays and toy prevent their passage from the. inside to the outside and from the outside tothe inside of the bottle.Y I prefer to provide such coating' of a material which will close any pores there might be in the metal forining the walls of this space, and to occlude any gases there may be on the inner surface of this space to prevent such occluded gases passing through said coating into the heatinsulating space.

, I prefer that this coating shall be a coating of silver solution received over the inner surface of said walls for depositing a coating of silver or mercury upon the same.

The coating solution inay ber introduced thro-ugh the bore 89, and the residue thereof removed from said space through said bore. The rinsing of said surface after coating may also be accomplished by the introduction of water through said bore, agitating same, and discharging said watei` through said bore. t o n The structural parts of the vessel are preferably made out of sheet metal, for instance, sheet steel, the inner surface of the heat-insulating space being suitably cleaned and treated prior to application of the inner coating. K

I desirably insert in the heat-insulating space 13 between the inner wall and the outer Wall? a light cellular substance which isc Cit

been previously heat treated to consume the deleterious substances therein as well as ex ttact the moisture therefrom, in order to purify the same, and thereby to aid in the creation of `a vacuum in the heat-insulating` space. I prefer that the substance shall of itself be an insulating material, that it contain large quantities of minute cells and minute spaces o r recesses winch communicate with each other, and that after heat treatment it shall be substantially non-absorbent of gases. 'Ihe'further characteristics of the material which I prefer to employ are that it is buoyant, that it is light in weight in comparison with its bulk, that it shall not become packed or dense by its own weight or mass, and that it shall continuously substantially present and maintain its original cellular structure during use of the vessel so that the same may continue to fill the heat-insulating space in the vessel ythroughout use thereof over a long period of time. i

I have found such desirable material to be what is known as diatomaceous earth` which is a species of algae and is found in deposits in this country and in various parts of other countries. The filling body of this material is shown at 132. r)Chis earth is ground into a line powder and `forms extremely small grains which are cellular structures, or substantially so, to form recesses and spaces between the structures which communicate with each other. After said finely ground powdered rdiatomaceous earth has been air-dried as to be apparently dry, I place the same in a furnace or retort. and subject the same to heat for imparting heat thereto of from four hundred degrees to six hundred degrees Fahrenheit, throughout a period of about one hour, and at the same time withdraw the air and gases ot evaporation in the retort by means of a pump, burning the vegetabie matter and foreign substances as well as moisture in the diatomaceous earth and removing` the same by exhausting.'

I preferably fil-l the heat-insulating space with such kheat-treated diatomaceous earth by passing the same through the bore 89 prior to the insertion of the filtering material 8l and the closing plug 91, but the diatomaceous earth may be filled in to said space Aprior to the closing of said space by the insertion of the outer bottom 42.

I prefer to exhaust the air from said space. The exhausting of the air from the heat-insulating space is accomplished by suitable means, for inst-ance, by usual vacuum pumps for rarefying the air or creating a vacuum in said heat-insulating space in the presence of heat. 'Ihe air in said space is drawn through said taper bore 89, and the arresting material 8l, to retain the finely divided insulating material in said space flange when employed. rIlhe plug is inserted when a sufficient degree of vacuum has been obtained in said space for sealing said space and maintaining a vacuum therein.

It may, as hereinbefore stated, be desirable to insert the insulating material in the heat-insulating space prior to attachment of the outer bottom 42. In such case the connected inner and outer walls, omitting the outer bottom are placed upside down, and the insulating space filled with the insulating material, the outside bottom, with the arresting material 81 in place, being then applied and hermetically sealed. If the inner surface of the insulating space is to be provided with a coating to arrest actinic rays, such coating is applied separately to the inner face of the bottom and of the balance of the double walled vessel prior to the joining and hermetical sealing of the same.

The base 96 may be secured to the outer member before or after said space is eX- `hausted. After exhaustion of said space, the outer plate 10iis secured in place, as by means of soldering, so that, if desirable, said plate may be again readily removed by heating the solder and releasing the plate.

It may, for instance, be desirable in the course of time to re-eXhaust said space, which can be readily done by removal of said plate, the removal of said slug, the reexhaustion or recreation of a vacuum in the heat-insulating space, and inserting a new plug. Villien said exhaustion has been conipleted, the plate lO-i is then again soldered in place for again closing the dead air space in said base. rllhis replenishing of the vacuum in the bottle may take place repeatedly.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a. double-walled bottle, the combina-- tion of an inner metal wall having a bottom and an outer metal wall having a bottom and having a heat-insulating space therebetween, said bottom of said outer wall provided with a central depression, an inner surrounding said del ression for forming a recess, a fibrous arresting material in said recess, the wall of said depressien provided with an aperture, means for closing said aperture, and a finely divided insulating material substantially filling said heat-insulating space.

2. In a double-walled bottle, the combination of an inner meta-l wall having a bottom andan outer metal wall having a bottom and having a heat-insulating space therebetween, said bottom of said outer wall provided with a. central depression, an inner flange surrounding said depression for forming a recess, a fibrous arresting material in said recess, the wall of said depression provided with an aperture,imeans for closing said aperture, a finely divided insulating material substantially filling said heat-insulating space, a socket-piece secured in said aperture, said socket-piece provided with an outwardly tapering socket, and a taper plug forced into said socket for closing said space.

3. In a double-walled bottle, the combination of an inner metal wall and an outer metal wall having a heat-insulating space therebetween, said walls comprising bottoms, said outer bottom provided with an aperture, an auxiliary bottom received about said outer bottom comprising a removableplate, a joint between Said auxiliary bottom and saidouter body, a dead air space between said outer bottom and said auxiliary bottom, and closing means for said aperture in said dead air space, said closing means being accessible from the outside `of said auxiliary bottom by removal plate from said auxiliary 4:. In a double-Walled bottle, the combination of an inner metal wall and an outer aperture in said dead air space, said closing means being accessible from the outsider of said auxiliary bottom by removal of said removable plate from said auxiliary bottom, Vsaid closing means comprising a socketpiece provided with a taper socket, and a removable plug,- of softer material than said socket-pieoe forced into said socket to form a seal between said socket and said socketpiece. l

In testimony whereof, I have hereunto signed my name.

.ALMANE ALTENBERG. 

